in being technical, i neglected to mention some of the deepest, intrinsic, and inexplicable things at the very core of Panerai - and i couldn't agree more.
is one in which the numerals and indices are made from a compound that contains tritium, a slightly radioactive and luminescent material. They're very desirable amongst collectors, and A series Panerai had tritium dials. There were also a number of B seri...